Adjustable shore



Patented Sept. 9, 1930 OFFICE GEORGE n. Bosco, or CHICAGO, ILLINOIS ADJUSTABLE SHORE Application filed May 10,

The main objects of this invention are to provide an improved form of adjustable shore; to provide improved means for securing the two struts of a shore against lone gitudinal slippage relative to each other; to provide improved means for securing the two struts against lateral slippage relative to each other; and to provide a shore of this kind having an improved form of foot adaptlu ed to secure the short against tilting.

An illustrative embodiment of this invention'is shown in the accompanying drawing, wherein Figure 1 is a fragmentary side elevation l of an adjustable shore to which this invention is applied.

Fig. 2 is a transverse section of the same, taken on the line 2 2 of Fig. 1.

Fig. 3 is a perspective of the means for se- ZU curing the struts against longitudinal slippage relative to each other.

Fig. 4 is a perspective of the improved means for securing thetwo struts against lateral slippage relative to each other.

Fig. 5 is a perspective of the improved foot.

rlhe improvements embodying this invention may be appliedtotimbersof various kinds but, in the specific construction herein shown, they are applied to an adjustable shore com- 210 prising a pair of overlapping struts 1 and 2 adapted to be secured together by a clamp 3.

The two struts 1 and 2 are preferably posts of standard construction, such as 4 X 4 timbers, which may be of any desired lengths.

In the construction illustrated, the clamp 3 comprises a pair of spaced side plates 4 and 5 which embrace the two struts and which are secured at one end to the strut l by bolts 6 or other suitable fastening means. Secured to the opposite end of the plates 4 and 5, is a bolt 7 which supports a spacing sleeve 8.

Formed in the side plates 4 and 5, is a pair of slots 9, which provide a lreyway for supporting a wedge 10, which is adapted to be driven into engagement with the outer face of the strut 2.

Located between the abutting faces of the struts 1 and 2, isa pair of serrate bars 11 and 12, which are preferably disposed on respectively opposite sides of the clamp 3 and at 1929. Serial No. 362,078.

substantially right angles to the axis of the1 shore. The bars 11 and 12 are rigidly secured to the post or strut 1 by nails 13 or other suitable fastening means.

Formed in the bars 11 and 12, are teeth 14 55 and 15, respectively, which are adapted to cut into the inner surface of the strut 2under the action of the wedge 10. The teeth 14 are disposed transversely of the shore, so as to secure the struts against relative longitudinal slippage and the teeth 15 are disposed longitudinally of the shore so as to secure the struts against lateral slippage relative to each other.

Due to the eccentricity of the strut 2 and clamp 3 relative to the post 1, an improved foot 16 is secured to the lower end of the post 1 for supporting the shore in an upright position.

In the form shown the foot 16 comprises a cup-shaped base 17 having ears 18 for receiving a bolt 19, which secures the foot to the post 1. Extending laterally from the base 17, is a bearing plate 2O located directly below the strut 2. The plate 2O projects beyond the outer edge of the strut 2, so as to provide sufficient bearing surface for securing the shore in an upright position.

Apertures 21 formed in the base 17 and extension 20, permit attachment of the foot to the floor by nails or other suitable fastening means.

From the foregoing description, it is believed that the operation of the device is obvious. l

I claim: v

1. An adjustable shore comprising a pair of overlapping struts extending longitudinally of each other and having abutting faces, a clamp for securing said struts together, and a serrate member located between said abuttingao faces and offset from said clamp, said mem--`4` ber extending transversely of said struts and having teeth extended longitudinally of said struts for securing said struts against lateral slippage relative to each other.

2. An adjustable shore comprising apairI of overlapping struts extending longitudinally of each other and having abutting faces, a clamp for securing said struts together, and a pair of serrate members located between said abutting faces and disposed on respectively opposite sides of said clamp, one of said members having serrations extending transversely of the shore to secure said struts against slippage only longitudinally of each other, the other of said members having serrations extending longitudinally of the shore to secure said struts against only lateral slippa e relative to each other.

igned at Chicago this Sthsday ofnlVIay,` GEORGE B. BOSLKK). 

